H3C Technologies H3C SecPath F1000-E - Manual (Page 207)

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In MSTP, a VLAN packet is forwarded along the following paths:
• Within an MST region, the packet is forwarded along the corresponding MSTI.
• Between two MST regions, the packet is forwarded along the CST.
Implementation of MSTP on Devices
MSTP is compatible with STP and RSTP. STP and RSTP protocol packets can be recognized by devices
running MSTP and used for spanning tree calculation.
In addition to basic MSTP functions, the device provides the following functions for ease of management:
• Root bridge hold
• Root bridge backup
• Root guard
• BPDU guard
• Loop guard
• TC-BPDU guard
• Support for the hot swapping of interface boards and switchover of the active and standby main
boards
Protocols and Standards
MSTP is documented in:
• IEEE 802.1d: Spanning Tree Protocol
• IEEE 802.1w: Rapid Spanning Tree Protocol
• IEEE 802.1s: Multiple Spanning Tree Protocol
Configuring MSTP
Configuration Task List
Before configuring MSTP on devices, find out the role of each device in the spanning tree instance, which
can be root bridge or leaf node. Each spanning tree instance has only one root bridge, while all the other
devices in the instance are leaf nodes.
Perform the tasks listed in
Table 7 to configure MSTP.
Table 7 MSTP configuration task list
Task Remarks
Configuring an MST Region
Optional
Configure the MST region-related parameters and VLAN-to-MSTI mappings.
By default, the MST region-related parameters adopt the default values, and
all VLANs in an MST region are mapped to MSTI 0.